2008 Cadillac SRX humming noise

Tiny
TRACYJ
  • MEMBER
  • 2008 CADILLAC SRX
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 44,500 MILES
Humming noise when I drive 40mph till 60mph but when I get to 65mph its not that loud
Thursday, May 20th, 2010 AT 3:08 PM

1 Reply

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
Several possibilities, they include wheel bearings(any of the four), transfer case noise(if this is truly all wheel drive), front or rear(most common) differential noise. First to check would be if you can duplicate this noise when lifted and run up to speed. Next would be to check fluid levels in the differentials. If this does not lead anywhere, it may require the use of a listening device like Steelman's Chassis Ear. This has sensors that can be placed on the vehicle in chosen locations and roadtesting can be done while listening to each of these sensors one at a time through a switch box. The vehicle should still be under warranty, were you aware of that?
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Thursday, May 20th, 2010 AT 11:21 PM

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